A non-uniform metal distribution in the ram-pressure-stripped circumgalactic medium of M86

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00144447" target="_blank" >RIV/00216224:14310/25:00144447 - isvavai.cz</a>

Výsledek na webu

<a href="https://academic.oup.com/mnras/article/542/3/2323/8238074" target="_blank" >https://academic.oup.com/mnras/article/542/3/2323/8238074</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/staf1364" target="_blank" >10.1093/mnras/staf1364</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A non-uniform metal distribution in the ram-pressure-stripped circumgalactic medium of M86

Popis výsledku v původním jazyce

The chemical enrichment of X-ray-emitting hot haloes has primarily been studied in closed-box galaxy clusters. Investigating the metal content of lower mass, open systems can serve as a valuable tracer for understanding their dynamical history and the extent of chemical enrichment mechanisms in the Universe. In this context, we use an 85.6 ks XMM-Newton observation to study the spatial distribution of the abundance ratios of Mg, Si, and S with respect to Fe in the hot gas of the ram-pressure-stripped M86, which has undergone morphological transformations. We report that the chemical composition in the M86 galaxy core is more similar to the rest of the hot gaseous content of the Universe than to its stellar population. This result indicates that even supersonic ram pressure is insufficient to strip the inner part of a galaxy of its hot atmosphere. Comparison with other galaxies undergoing ram-pressure stripping suggests that stripping the 'primordial' atmosphere of a galaxy requires a combination of ram-pressure stripping and strong radio-mechanical active galactic nucleus activity. The X-ray emission structures within M86, the plume and the tail, are found to be relatively isothermal. We observe that the Mg/Fe ratio in the plume is 3.3sigma higher than in the M86 galaxy core and is consistent with that in the M86 group outskirts and the Virgo ICM, suggesting that the plume might originate from the low-entropy outer gas rather than from the recent ram-pressure stripping of the dense galaxy core.

Název v anglickém jazyce

A non-uniform metal distribution in the ram-pressure-stripped circumgalactic medium of M86

Popis výsledku anglicky

The chemical enrichment of X-ray-emitting hot haloes has primarily been studied in closed-box galaxy clusters. Investigating the metal content of lower mass, open systems can serve as a valuable tracer for understanding their dynamical history and the extent of chemical enrichment mechanisms in the Universe. In this context, we use an 85.6 ks XMM-Newton observation to study the spatial distribution of the abundance ratios of Mg, Si, and S with respect to Fe in the hot gas of the ram-pressure-stripped M86, which has undergone morphological transformations. We report that the chemical composition in the M86 galaxy core is more similar to the rest of the hot gaseous content of the Universe than to its stellar population. This result indicates that even supersonic ram pressure is insufficient to strip the inner part of a galaxy of its hot atmosphere. Comparison with other galaxies undergoing ram-pressure stripping suggests that stripping the 'primordial' atmosphere of a galaxy requires a combination of ram-pressure stripping and strong radio-mechanical active galactic nucleus activity. The X-ray emission structures within M86, the plume and the tail, are found to be relatively isothermal. We observe that the Mg/Fe ratio in the plume is 3.3sigma higher than in the M86 galaxy core and is consistent with that in the M86 group outskirts and the Virgo ICM, suggesting that the plume might originate from the low-entropy outer gas rather than from the recent ram-pressure stripping of the dense galaxy core.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GX21-13491X" target="_blank" >GX21-13491X: Zkoumání žhavého vesmíru a porozumění kosmické zpětné vazbě</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Svazek periodika

542

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

22

Strana od-do

2323-2344

Kód UT WoS článku

001562518000001

EID výsledku v databázi Scopus

2-s2.0-105015142165